The Mountain Hardwear Polartec® Power Grid™ Half Zip Jacket transforms your layering game with its technical grid-backed fleece construction that masterfully traps heat while wicking away moisture during everything from ice climbs to backcountry tours. Made with 60% recycled polyester, this versatile midlayer works overtime as your faithful thermal companion—never getting benched regardless of season or sport. Your adventure wardrobe has plenty of seasonal players, but this half-zip is your year-round MVP.